The Inova Personalized Health Accelerator (IPHA) is preparing to accept applications from early-stage startups focused on predicting, preventing and treating disease. Falls Church-based Inova Health System announced plans for the accelerator last December when it also launched Inova Strategic Investments, a venture-capital program. Both projects are housed at the new Inova Center for Personalized Health, a 117-acre campus in Fairfax County.